My winter project has been these awesome '83 Schwinn Voyageur, and I recently installed a Velo Orange Pass Hunter front rack onto it (the one with the integrated decaleur). Since installing new Shimano CX70 cantilever brakes on it, though, the rack now sits noticeably un-level.

I tried using a spacer and a brake bracket on the front of the fork, which brought it down a little bit--but I can't add any more because then I won't have enough thread off the back of the fork to mount the fender.

So am I doomed to have a rack that's forever angled slightly up? Am I a product of vintage narrow cantilever posts and a modern production rack? If you've solved this problem before, I'm all ears!